c# - Creating a background and I need some advice with errors

Question

I'm creating a background out of the Xna game studio 3.0 book for xna 4.0 and I'm trying to create a background using the code given in the book.

I get some errors half way through and I don't know why. Can I please get some help of why this is happening?

By the way this is my first time on this site so sorry if I'm doing something wrong.

my code : ** code ** = error

#region Background code and data

   **GameSpriteStruct** background;

    private void loadBackgroundContent()
    {
        background.SpriteTexture =
        Content.Load<Texture2D>("Clear");

        background.SpriteRectangle =
            new Rectangle(
                (int)**minDisplayX**, (int)**minDisplayY**,
                (int)(**maxDisplayX** - **minDisplayX**),
                (int)(**maxDisplayY** - **minDisplayY**)
                );
    }

    private void updateBackground()
    { 
    }

    private void drawBackground()
    {
        spriteBatch.Draw(background.SpriteTexture,
            background.SpriteRectangle, Color.White);
    }